Worm-wheel bearing for hair clippers and the like



March 31, 1925.

G. w. MOORE WORM WHEEL BEARING FOR HAIR CLIPPERS AND THE LIKE Filed`0ct. l28, 1922 l am Patented Mar. 31, 1925.

GEORGE VJ'. MGORE, F CHICAGO, LLNOIS.

WORM-VHEEL BEiR-NG EGR HAIR CLIPPERS AND THE LIKE.

Application iled Gctober 28, 1922. Serial lNo. 597,652.

To all whom t may concern.;

Be it known that I, GEORGE TW. MOORE, a itizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful 'improvements in l/Vorm-l/Vheel Bearings for Hair Clippers and the like, of which the following` is a specification.

My invention relates to improvements in worm wheel bearings for hair clippers' and the like, the object of the invention being to provide a simple and efficient bearing of this character' which is .durable and efficient in use and may be readily renewed if worn.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

rllhe invention will be best understood by reference to the accompanying drawings forming a part of this specification and in which,

F ig. l, is a side view of a. hair clipper equipped with a bearing embodying the invention,

Fig. 2, is a bottom plan view of the same with the closure plate removed,

Fig. 3, is an enlarged section taken substantially on line 3 3 of Fig. 2, and

Fig. 4, is a perspective view of a bearing sleeve employed in the construction.

The preferred form of construction as illustrated in the drawings comprises a holl w handle or casing 5, carrying a cutter head 6 and a reciprocating cutter blade 7 operated by a leverl 8 which in turn is operated by a worm wheel 9 driven by a worm shaft l0. So much of the construcion constitutes no part of my present invention except in so far as the same cooperates with the parts to be presently described.

The present invention relates particularly to the bearing provided for the worm wheel, 9. To this end the worm wheel 9 is made of composition material such as balzelite adapted to the purpose and also adapted to constitute in itself an efficient bearing. To support the worm wheel 9, I provide a supporting boss l1 formed integrally with the metal casing 5 preferably by casting the samefrom metal in the form of a die casting. The boss ll is provided with a threaded socket terminating in the wall of the casing. A threaded stud 12 is secured in and projects from the boss kr1l abutting against the bottom of said boss and a tireaded sleeve 13 is removably mounted on said stud, and provided with ya bearing collar or flange Pl resting on the boss l1 as shown. The sleeve 13 and collar 14; are formed of hardened steel well adapted to constitute a bearingfor the worm wheel 9 and the worni wheel is provided with a central bore loosely fitting the sleeve 13" and turning freely thereon. Y

ABy this arrangement a simple and efficient bearing is provided for the wormy wheel which my be readily renewed Vin caseof wear.

Vhile l have illustrated and described the Vpreferred formof construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit Yof the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having ldescribed my invention what I claim as new and desire to secure by Letters Patent is:

l. The combination with a support, of a stud rigidly secured to said support and projecting therefrom, said studL being of substantially uniform diameter and threaded throughout its entire effective length; and a bearing sleeve threaded on saidstud and seating against the support, wherebyn said bearing sleeve may be removed or replaced without disturbing said stud, substantially l as described.

2. The combination with a support having al threaded socket terminating therein, of'a threaded stud in said socket and rseating against the bottom thereof, said stud being of substantially uniform diameter and threaded from end to end; and al bearing sleeve threaded on said stud and seating against the wall of said casing, whereby said sleeve may be removed or replaced without disturbing said stud, substantially as described. i

3. In a 'hair clipper the combination of a metallic casing having a supporting boss formed integral with a wall thereof, saidv supporting'boss beingl providedy with a threaded socket vterminating in the wall of the casing; a threaded stud threaded in saidv socket and seating against the bottom thereo and projecting into said easing, said stud being of uniforn'i dia-meter and threaded from end to end; a bearing sleeve threaded on said stud and having an integral bearing,l collar seating on said boss, whereby said bearing sleeve may be removed or replaced without disturbingl said stud; and a. Worin Wheel of composition material loosely mounted on said sleeve, `substantially 10 as described. Y

ln testimony whereof l have signed my naine to this specilieation in kthe presence el two subscribing Witnesses.

GEORGE WV. MOORE.A

lVitnesses Y I JOSHUA R. H. POTTS,V FREDA C. APPLETON. 

